DE3139853A1 - Vehicle crane with telescopic jib - Google Patents

Vehicle crane with telescopic jib

Info

Publication number
DE3139853A1
DE3139853A1 DE19813139853 DE3139853A DE3139853A1 DE 3139853 A1 DE3139853 A1 DE 3139853A1 DE 19813139853 DE19813139853 DE 19813139853 DE 3139853 A DE3139853 A DE 3139853A DE 3139853 A1 DE3139853 A1 DE 3139853A1
Authority
DE
Germany
Prior art keywords
jib
counterweight
vehicle crane
centre
gravity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE19813139853
Other languages
German (de)
Inventor
Bernhard Dipl Ing Dueser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vodafone GmbH
Original Assignee
Mannesmann AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mannesmann AG filed Critical Mannesmann AG
Priority to DE19813139853 priority Critical patent/DE3139853A1/en
Priority claimed from GB8209736A external-priority patent/GB2096097B/en
Publication of DE3139853A1 publication Critical patent/DE3139853A1/en
Ceased legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/82Luffing gear
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/72Counterweights or supports for balancing lifting couples
    • B66C23/74Counterweights or supports for balancing lifting couples separate from jib
    • B66C23/76Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib

Abstract

The present invention relates to a vehicle crane with a telescopic jib which is braced via ropes which are run from one of the jib parts to the foot of the jib via a bracing gantry extending upwards on the basic jib in the area of the luffing-cylinder articulation. The jib can be swivelled in a perpendicular plane by luffing cylinders. To increase the righting moment, a counterweight is provided which can be moved to a greater distance from the respective tilting edge by means of a mast attached to the superstructure and placed to the rear. The present invention has recognized that the counterweight projecting to the rear involves disadvantages, since the unloaded machine can tilt to the rear due to the counterweight when the centre of gravity of the entire system without load lies outside the supporting area of the vehicle crane. The invention therefore proposes to control the projection of the counterweight (10) as a function of the change in the centre of gravity of the machine as a result of the swivelling of the jib (1). This means that the counterweight (10) is extended further to the rear when the jib (1) is level than when the jib (1) is at a steep angle. <IMAGE>
DE19813139853 1981-10-07 1981-10-07 Vehicle crane with telescopic jib Ceased DE3139853A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19813139853 DE3139853A1 (en) 1981-10-07 1981-10-07 Vehicle crane with telescopic jib

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813139853 DE3139853A1 (en) 1981-10-07 1981-10-07 Vehicle crane with telescopic jib
GB8209736A GB2096097B (en) 1981-04-04 1982-04-01 Telescopic jib cranes

Publications (1)

Publication Number Publication Date
DE3139853A1 true DE3139853A1 (en) 1983-04-28

Family

ID=6143593

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813139853 Ceased DE3139853A1 (en) 1981-10-07 1981-10-07 Vehicle crane with telescopic jib

Country Status (1)

Country Link
DE (1) DE3139853A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7137518B2 (en) 1999-06-28 2006-11-21 Terex-Demag Gmbh & Co. Kg Telescopic crane
DE10022600B4 (en) * 1999-06-28 2007-09-27 Terex-Demag Gmbh & Co. Kg Telescopic crane
US9950913B2 (en) * 2015-01-13 2018-04-24 Terex Global Gmbh Crane and support unit for such a crane

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2839665A1 (en) * 1978-09-12 1980-03-13 Liebherr Werk Ehingen Heavy duty crane with counterballast
DE2917829A1 (en) * 1979-05-03 1980-11-13 Gottwald Kg Leo Vehicle crane with telescopic boom
DE3113763C2 (en) * 1981-04-04 1988-09-01 Mannesmann Ag, 4000 Duesseldorf, De

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2839665A1 (en) * 1978-09-12 1980-03-13 Liebherr Werk Ehingen Heavy duty crane with counterballast
DE2917829A1 (en) * 1979-05-03 1980-11-13 Gottwald Kg Leo Vehicle crane with telescopic boom
DE3113763C2 (en) * 1981-04-04 1988-09-01 Mannesmann Ag, 4000 Duesseldorf, De

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7137518B2 (en) 1999-06-28 2006-11-21 Terex-Demag Gmbh & Co. Kg Telescopic crane
DE10022600B4 (en) * 1999-06-28 2007-09-27 Terex-Demag Gmbh & Co. Kg Telescopic crane
DE10022658B4 (en) * 1999-06-28 2007-10-04 Terex-Demag Gmbh & Co. Kg Telescopic crane
US9950913B2 (en) * 2015-01-13 2018-04-24 Terex Global Gmbh Crane and support unit for such a crane

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